Aluminum Association Specifications for Anodizing

Aluminum Association
Specification	Coating Thickness	ADT	Remarks
C1X		None	Some form of cleaning
C22		None	Medium matte etch
C27 / C28		None	Desmut / Deoxidize
A211	> 0.1 mil (2.5 µm)	None	Clear - equivalent to Alumilite 201
A212	> 0.2 mil (5.0 µm)	None	Clear - equivalent to Alumilite 202
A31	0.4 - 0.7 mil	None	Clear - equivalent to Alumilite 204
A33	0.4 - 0.7 mil	None	Dye
A34	0.4 - 0.7 mil	None	Anolok®
A41	> 0.7 mil	None	Clear - equivalent to Alumilite 215
A43	> 0.7 mil	None	Dye
A44	> 0.7 mil	None	Sandocolor®

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